Hello everyone. I'm having an issue with oil consumption. I thought I solved the problem several months ago. But it seems to have revealed itself in the long road trips I've taken this summer. It seems to only burn a measurable amount on the highway. Out of curiosity, I removed the driver's side PCV tube, and it was saturated with oil. So much that it dripped out. But the passenger side PCV tube was dry.

I've heard a lot about the PCV valve being electrically heated, but I saw no electrical connections when I removed the valve covers a couple of months ago.

Does anyone have any knowledge about oil being burned by the PCV system?

Thanks.

 

What motor ?

 

PCV may be in the valve cover inside . If I remember correctly the path is from the passenger side to the drivers side then to the throttle body . Perhaps it is connected to the wrong port on throttle body?
This engine burns some oil wonder how much he is losing per 3000 mi .
My 05 at 130k drivers side was very varnished up inside and I cleaned it . Some used brake clean others used carb cleaner . I used some brake cleaner and finished with dawn .

 

Good morning everyone. Sorry for not explaining very well. The engine is a 5.4 3V. As it relates to the amount of oil consumption, it's very inconsistent. When I stay around town, at low speeds, it doesn't burn any measurable amount of oil. If it's exclusively on the highway, it burn about a quart every 1200 miles.

At your suggestion, I've verified that the PCV hoses are connected correctly. Perhaps the oil in only one hose is an indication that the drivers side PCV valve is damaged, or stuck in an open position? Also, compression tests return normal. Thanks.

 

Hmm-my engine acts opposite on oil consumption-it uses oil in city driving-but none on highway driving. I use about a quart every 2000-3000 miles-which appears "normal" to what I've heard. I don't think mine is clogged @ 69k. It has always used some oil since new-I'm the original owner.

 

Hey FrozenTundraGuy. Have you checked the PCV lines for oil? Regardless of my basic engine knowledge, I'm somewhat comforted knowing that the PCV system is burning the oil, as opposed to something more serious inside the engine. But I have the type of personality that won't let me forget about it.

 

I don't think the PCV system is capable of doing that. It is designed to only provide heat at 32 degrees and below.. controlled by the ECU

 

I want to make sure I understand correctly, that you believe the oil consumption problem is somewhere else in the engine? I made the assumption that the PCV system was burning oil because of how much oil I found in the PCV line. Is there something else that could cause oil to be burned that way?

Thanks.

 

What I'm saying (if you are referring to my statement) is, I do not believe the PCV system could burn oil.. The heated part of the PCV is designed to operate at or below 32 degrees .. so I would think there is something else burning your oil.. look at your tail pipe .. is it black

 

Thanks for the response. Yes, a black suity tailpipe. But it's not oily. I should clarify that my concern isn't that the PCV heating element is burning the oil. My concern is a faulty PCV system may be sending oil to the intake. I've read that the PCV valves on this engine aren't serviceable because they're "fail proof", but I lack the technical knowledge to confirm this information. Apparently I have to replace the valve cover to replace the PCV valve. Is this right?